Willis Caitlin E, Foster Stephen P, Zimmer Christoph T, Elias Jan, Chang Xianmin, Field Linda M, Williamson Martin S, Davies T G Emyr
Biointeractions and Crop Protection Department, Rothamsted Research, West Common, Harpenden, UK.
Royal Agricultural University, Stroud Rd, Cirencester, Gloucestershire, UK.
Crop Prot. 2020 Dec;138:105316. doi: 10.1016/j.cropro.2020.105316.
The cabbage stem flea beetle, L. is a major pest of winter oilseed rape in several European countries. Traditionally, neonicotinoid and pyrethroid insecticides have been widely used for control of , but in recent years, following the withdrawal of neonicotinoid insecticide seed treatments, control failures have occurred due to an over reliance on pyrethroids. In line with previous surveys, UK populations of were found to exhibit high levels of resistance to the pyrethroid lambda-cyhalothrin. This resistance was suppressed by pre-treatment with the cytochrome P450 inhibitor PBO under laboratory conditions, suggesting that the resistance has a strong metabolic component. The L1014F (kdr) mutation in the voltage-gated sodium channel, which confers relatively low levels (10-20 fold) of resistance to pyrethroids, was also found to be widespread across the UK regions sampled, whereas the L925I (s-kdr) mutation was much less common. The current survey also suggests that higher levels of pyrethroid resistance have spread to the North and West of England, and that resistance levels continue to remain high in the South East.
甘蓝茎跳甲是欧洲几个国家冬油菜的主要害虫。传统上，新烟碱类和拟除虫菊酯类杀虫剂被广泛用于防治甘蓝茎跳甲，但近年来，随着新烟碱类杀虫剂种子处理剂的停用，由于过度依赖拟除虫菊酯类杀虫剂，防治失败的情况时有发生。与之前的调查一致，英国的甘蓝茎跳甲种群对拟除虫菊酯类的高效氯氟氰菊酯表现出高度抗性。在实验室条件下，用细胞色素P450抑制剂PBO预处理可抑制这种抗性，这表明该抗性具有很强的代谢成分。电压门控钠通道中的L1014F（kdr）突变对拟除虫菊酯类产生相对较低水平（10 - 20倍）的抗性，在英国采样的各个地区也广泛存在，而L925I（s - kdr）突变则不太常见。当前的调查还表明，较高水平的拟除虫菊酯类抗性已经蔓延到英格兰北部和西部，东南部的抗性水平仍然很高。
